C++ Program to Print Right Pascals Star Triangle

Write a C++ program to print right pascals star triangle using for loop. 

#include<iostream>
using namespace std;

int main()
{
	int i, j, rows;
     
    cout << "Enter Right Pascals Star Triangle Rows = ";
    cin >> rows;

    cout << "Right Pascals Star Triangle Pattern\n"; 

    for(i = 0; i < rows; i++)
    {
    	for(j = 0; j <= i; j++)
		{
            cout << "* ";
        }
        cout << "\n";
    }	

    for(i = rows - 1; i >= 0; i--)
    {
    	for(j = 0; j <= i - 1; j++)
		{
            cout << "* ";
        }
        cout << "\n";
    }	
 	return 0;
}
C++ Program to Print Right Pascals Star Triangle

This C++ example prints the right pascals triangle pattern of a given character using a while loop.

#include<iostream>
using namespace std;

int main()
{
	int i = 0, j, rows;
    char ch;
     
    cout << "Enter Right Pascals Star Triangle Rows = ";
    cin >> rows;

    cout << "Enter Symbol for Right Pascals Triangle = ";
    cin >> ch;

    cout << "Right Pascals Star Triangle Pattern\n"; 

    while( i < rows)
    {
        j = 0;
    	while( j <= i)
		{
            cout << ch << " ";
            j++;
        }
        cout << "\n";
        i++;
    }	

    i = rows - 1; 
    while(i >= 0)
    {
        j = 0; 
    	while(j <= i - 1)
		{
            cout << ch << " ";
            j++;
        }
        cout << "\n";
        i--;
    }	
 	return 0;
}
Enter Right Pascals Star Triangle Rows = 12
Enter Symbol for Right Pascals Triangle = #
Right Pascals Star Triangle Pattern
# 
# # 
# # # 
# # # # 
# # # # # 
# # # # # # 
# # # # # # # 
# # # # # # # # 
# # # # # # # # # 
# # # # # # # # # # 
# # # # # # # # # # # 
# # # # # # # # # # # # 
# # # # # # # # # # # 
# # # # # # # # # # 
# # # # # # # # # 
# # # # # # # # 
# # # # # # # 
# # # # # # 
# # # # # 
# # # # 
# # # 
# # 
# 

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Suresh is the founder of TutorialGateway and a freelance software developer. He specialized in Designing and Developing Windows and Web applications. The experience he gained in Programming and BI integration, and reporting tools translates into this blog. You can find him on Facebook or Twitter.